I beg to differ with the majority of replies on this thread. I think most PPLs are a messy lot and could benefit from wearing a nice ironed white shirt, tie and those stripey things on their shoulders.
All the instructors at the "training organisation" opposite where I am learning to fly wear
propa white shirts and epaulettes. I yearn for the day when I to can wear
mine with pride as I carry my shiny leatherette Jeppesen type flight case up to my PA-28 with a gaggle of dazzled girlies (and boys!) "oohing" and "aahing" as I mount my shiny steed (and then climb into the aircraft).
Also means you can charge an extra 20 quid an hour for instruction!